National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

79°F

26°C

Humidity 38%
Wind Speed Calm
Barometer 29.92 in (1012.6 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Nov 3:56 pm CST
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Clear, with a low around 50. Calm wind.

    Low: 50 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Calm wind becoming south southeast around 5 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 74. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 49. North northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Partly cloudy, with a low around 47. North northeast wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 50. Calm wind.
Thursday
Sunny, with a high near 81. Calm wind becoming south southeast around 5 mph.
Thursday Night
Partly cloudy, with a low around 54. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Friday
Sunny, with a high near 74. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 51. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49. North northeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 66. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47. North northeast wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 48.
Veterans Day
Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
4:32 pm CST Nov 4, 2026
Forecast Valid:
4pm CST Nov 4, 2026-6pm CST Nov 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation